The point is that evaluation makes you better. My coach taught me the Principle of C.A.N.E.I., which is Constant And Never Ending Improvement.
So each week our teams evaluates our weekend and asks four simple questions, What was Right, Wrong, Missing and Confusing. We draw a quadrant and put each category in a box. It's a great tool to help you celebrate your successes and improve on your weaknesses.
As pastors and ministry team leaders, we certainly aren't "professionals" in the sense of the secular term. But we should approach our calling with even great passion and intensity than those who labor in the marketplace. After all, we are called to do everything "as unto the Lord." He expects our best effort. And that will take evaluation.